1321XEVK Freescale Semiconductor, 1321XEVK Datasheet - Page 14

• Manufacturer Part Number: 1321XEVK
• Description: KIT EVALUATION FOR 1321X
• Manufacturer: Freescale Semiconductor
• Type: Zigbeer

Specifications of 1321XEVK

• Frequency: 2.4GHz
• Wireless Frequency: 2.4 GHz
• Modulation: DSSS OQPSK
• Security: 128 bit AES
• Operating Voltage: 2 VDC to 3.4 VDC
• Operating Temperature Range: - 40 C to + 85 C
• For Use With/related Products: MC1321x
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

3
The MC1321x modem and CPU communicate primarily through the onboard SPI command channel.
Figure 4
module that is dedicated to the modem SPI interface. The modem is a slave only and the MCU SPI must
be programmed and used as a master only. Further, the SPI performance is limited by the modem
constraints of 8 MHz SPI clock frequency, and use of the SPI must be programmed to meet the modem
SPI protocol.
3.1
The SiP level SPI pin connections are all internal to the device.
with the SPI bus highlighted.
14
PTE5/SPSCK1
PTE4/MOSI1
PTE3/MISO1
MCU Signal
MC1321x Serial Peripheral Interface (SPI)
PTE2/SS1
MC1321x
shows the SiP internal interconnects with the SPI bus highlighted. The MCU has a single SPI
MODEM
SiP Level SPI Pin Connections
Modem Signal
Figure 4. MC1321x Internal Interconnects Highlighting SPI Bus
GPIO2/CRC_Valid
GPIO1/Out_of_Idle
SPICLK
MOSI
MISO
CE
Table 4. MC1321x Internal SPI Connections
RXTXEN
SPICLK
M_RST
M_IRQ
ATTN
MOSI
MISO
MC13211/212/213 Technical Data, Rev. 1.8
CE
MCU SPI master SPI clock output drives modem SPICLK slave clock input.
MCU SPI master MOSI output drives modem slave MOSI input
Modem SPI slave MISO output drives MCU master MISO input
MCU SPI master SS output drives modem slave CE input
PTE4/MOSI1
PTE3/MISO1
PTE5/SPSCK1
PTE2/SS1
PTD0
PTD1
PTE7
PTE6
PTD3
IRQ
Description
Figure 4
MCU
shows the SiP interconnections
Freescale Semiconductor
11
RESET